Speak for yourself.
Main Entry: ape
Pronunciation: 'Ap
Function: noun
Etymology: Middle English, from Old English apa; akin to Old High German affo ape
1 a : MONKEY; especially : one of the larger tailless or short-tailed Old World forms b : any of two families (Pongidae and Hylobatidae) of large tailless semierect primates (as the chimpanzee, gorilla, orangutan, or gibbon) -- called also anthropoid, anthropoid ape
2 a : MIMIC b : a large uncouth person
Once I was a tadpole
Beginning to begin.
Then I was a frog
With my tail tucked in.
Then I was a monkey
swinging from a tree.
And now I'm a professor
With a PhD.
Your definition is incorrect. Apes are neither platyrrhines nor cercopithecoids and are therefore not monkeys.